RC Brushless Motor Propeller Shaft OS74004039 (OMA-3810, OMA-3805) by O.S. Engine  [OS74004039]

O.S. ENGINES PROPELLER SHAFT SET OMA-3810,3805
Price:
AUD$21.04
Brand:
O.S. Engine
Model:
OS74004039
GTIN:
4531028151949
Condition:
Brand New
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Shaft assembly for OMA-3810 and OMA-3805 models

The propeller shaft set identified as OS74004039 by O.S. Engine is intended for use with assemblies referencing OMA-3810 and OMA-3805. It acts as a spare rotating element inside compatible brushless motor housings and associated driveline couplings.

Installation notes: position the model securely on your workbench, remove motor or gear covers as required, verify alignment and bearing clearance prior to final torquing, and follow your chassis maker's torque guidance. The shaft replaces damaged or bent units to restore concentric rotation and reduce mechanical looseness.

Tuning and maintenance role: fitting this shaft can improve rotational balance and reduce vibration, which supports stable motor behavior during tuning sessions. Always verify mating components such as bearings and couplers for correct fit to achieve consistent results.

Can replacing the shaft affect motor vibration?

Yes. Installing a concentric OS74004039 that matches bearing seats and coupling geometry can reduce vibration and make tuning more predictable. Balance checks after fitment are recommended.

Any setup tips when fitting this part?

Align the shaft carefully, hand-spin bearings to confirm free rotation before final assembly, and use the chassis maker's torque settings for fasteners to avoid introducing preload or distortion.

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